Angular quantization and form-factors in massive integrable models

Details Angular quantization and form-factors in massive integrable models Angular quantization and form-factors in massive integrable models

1997-07-09

arxiv.org/abs/hep-th/9707091v1

Nucl.Phys. B512 (1998) 616-636

Physics

High Energy Physics

High Energy Physics - Theory

23 pages, harvmac.tex

Scientific paper

10.1016/S0550-3213(97)00713-X

We discuss an application of the method of the angular quantization to reconstruction of form-factors of local fields in massive integrable models. The general formalism is illustrated with examples of the Klein-Gordon, sinh-Gordon and Bullough-Dodd models. For the latter two models the angular quantization approach makes it possible to obtain free field representations for form-factors of exponential operators. We discuss an intriguing relation between the free field representations and deformations of the Virasoro algebra. The deformation associated with the Bullough-Dodd models appears to be different from the known deformed Virasoro algebra.

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